Authentic St John's Bay variegated knit mock neck sweater Vintage 90's

No fabric or size tag. It is definitely an acrylic or wool blend. Not an itchy one, though! This has been one of my favorite sweaters for a LONG time and I can regret selling her later. I'm making way for new favorites! I love the yellow greens and turquoise colors. Very stretchy knit. flat measurements length 20" pit to pit 19" sleeve 21" I think that when washed you can shape it while wet if you want a longer skinner fit. My guess would be size medium.